Biosites Highly selective list of authoritative and stable sites on many topics related to health and medicine from the Pacific Southwest Regional Medical Library, with contributions from many medical libraries in the region.
	HealthWeb Highly selective list, similar to BioSites above, from the libraries of the Big Ten universities of the midwest, plus the University of Chicago.
	InfoMine Biological, Agricultural, and Medical Resources from UC Riverside.
	Clearinghouse Guides - Biology Each entry is a selective guide to Internet resources on one of several biological topics. The guides are prepared by individuals with subject expertise and must meet certain criteria for inclusion in the Clearinghouse.
	Clearinghouse Guides - Health & Medicine Each entry is a selective guide to Internet resources on one of several dozen biomedical topics, from abortion to virology. The guides are prepared by individuals with subject expertise and must meet certain criteria for inclusion in the Clearinghouse.
	Reviewed / Rated Sites
	Six Senses Medical sites on many topics, reviewed on several criteria, including interactivity, stability, content, and overall "experience".
	Magellan Health section of a large collection of rated and reviewed sites. Includes a search engine as well as listings of "family friendly" Web sites.

Exhaustive
These are sites which present as many health and medical resources as possible, some with little evaluation of a site's content or authoritativeness.

• Achoo
  Organized like a Yahoo! service specializing in health and medicine.

• BioCrawler
  Database with search and browse functions featuring over 7000 sites in biology and related disciplines.   This site is operated in Germany and is especially helpful in locating resources outside North America (but covers lots of American sites as well).

• CSU BioWeb
  Lists resources in many biology-related subjects.

• Diseases - MeSH Classified
  Uses the same biomedical subject vocabulary as MEDLINE and the UCSD ROGER Catalog.

• Martindale's Health Science Guide - Medical Resources (UC Irvine)

• Med Web - Emory University
  Choose Browse for subject listings.

• Medical Matrix
  Especially good for locating information about e-mail and Usenet discussion groups in Medicine.

• Medical Specialties (EINet Galaxy)

• OMNI: Organising Medical Networked Information
  A database of nearly 2,000 Internet sites in health and medicine. The site can be used by searching, as well as browsing through subjects, including MeSH subject terms (the same vocabulary used in MEDLINE) and even NLM Classification numbers (the same system used to arrange the books at the Biomedical and Medical Center Libraries)! Also features a search engine for locating material not in their database. The site is in the UK and can be slow.

• WWW Virtual Library - Biosciences
  Part of the WWW Virtual Library project, broken down by further topics.

• WWW Virtual Library - Medicine
  Part of the WWW Virtual Library project, this site is maintained at Oregon Health Sciences University.

• Yahoo - Health
  Choose Medicine for professional resources, Diseases and Conditions for resources on particular disorders.

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• Hardin Meta-Directory
  One level "up" from the above sites - links to other large resource guides.